It has been 20 years since BMW broke ground on its Spartanburg, SC manufacturing facility, and while the automaker doesn't have any plans to mark the moment, economists and industry analysts have taken a closer look at the facility's impact on South Carolina, the South and global manufacturing. As of November, the Spartanburg plant's 7,000 employees cranked out 25,000 vehicles per month, and BMW has poured some $6 billion into the state since the plant opened in 1993. While that figure nearly matches the state's proposed budget for next year, some say there have been drawbacks.

To begin with, South Carolina provided BMW with hundreds of millions of dollars worth of public money and tax breaks with little public oversight, setting a precedent that would repeat itself with other corporations. The Detroit News reports that a Pew Center evaluation found 26 states didn't have a sufficient system for evaluating tax incentive performance. But BMW opened the door for a Southern manufacturing renaissance, with automakers from Mercedes-Benz to Hyundai and Volkswagen opening plants in the Deep South.